Strut tower bars

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Originally Posted by blue2000s

Strut bars will always make some difference. How much you'll notice depends on your sensitivity and how you use the car.

I have all 3 bars (made my own lower bar) and didn't notice any difference when I added them. I have a front bar on my Rx-7 and immediately noticed an improvement in steering response so I think I am reasonably sensitive. The Boxster is really stiff to begin with.

Others say they can tell there's a stiffness increase.

+1
We essentially have the same front end as a 996 Cup car and they don't need/use strut tower bars. Probably not much gain there. The Pedro bar probably addresses the area of greatest flex and the most benefit. I used a lower stress bar for a while and thought it made a difference. I had to remove it for Time Trial competition as it is not legal in my class. The car still feels pretty solid.